/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineGroupsInterface.h
Update the user specified fields of the group such as name, description, etc. This call may fail if the name changes and the new name is already in use within this namespace.
void UpdateGroupInfo ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & ContextUserId, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & GroupId, const [FGroupDisplayInfo](API\Plugins\OnlineSubsystem\Interfaces\FGroupDisplayInfo) & GroupInfo, const [FOnGroupsRequestCompleted](API\Plugins\OnlineSubsystem\Interfaces\FOnGroupsRequestCompleted) & OnCompleted )